Holder for photographic image carriers



May 10, 1932. s. KAMINfiKI HOLDER F OR PHOTOGRAPHIC .IMAGE CARRIERSFiled April 19, 1929 Patented May 10, 1932 UNITED STATES PATENT OFFICESTEFAN KAMINSKI, OF MUNICH, GERMANY,

ASSIGNOR TO .AGFA ANSCO CORPORATION,

OF BIN GHAMTON NEW YORK A CORPORATION OF NEW YORK HOLDER FORPHOTOGRAPHIC IMAGE CARRIERS Application filed April 19, 1929, Serial No.

The present invention relates to a clamping device for suspendedarticles, such as photographic films or papers, which device consists ofa pressure roller which, by means of an oblique slot guiding the axlesof the roller, clamp the image carrier against a rear member or bearingpiece.

One feature of my invention is a holder for photographic films or paperscomprising clamping devices which consist of a rear member serving as asupport for the image carrier, and a movable pressure roller. The rolleris movably mounted between two side walls and its axle is shiftablycarried in slotways oblique to the rear member and cut in the side wallswhich, at the upper end, are fixed to the rear member and form with thelatter a downwards open slot. An image carrier may be introduced intothis slot and is automatically clamped by the pressure roller beingpressed with its own weight against the rear member.

I found it to be particularly advantageous to give to the guiding slotsin the side walls an obtuse-angled or curved shape, the lower part ofthese slots being slightly inclined to the rear member, whereas theupper part is inclined at a slightly larger angle to the latter.

I further found it to be advantageous that the axle of the pressureroller projects laterally beyond the side walls so as to serve ashandles for the roller. If the clamped film or paper is to be taken outof the holder the pressure rollers are raised on their projecting axles;in consequence of its arrangement in the oblique slots the roller isforcibly removed from contact with the clamped article, and the latteris then free.

One form of construction of the invention is illustrated by means ofexample in the accompanying drawings, in which:

Fig. 1 is a plan view,

Fig. 2 is a side view of the holder, and

Fig. 3 is a similar view to that of Fig. 2, but in this case thepressure roller is in the position of release of the device.

The holder comprises two side members 1 and 2 connected on their upperend with a rear member 3 serving as an abutment for 356,539, and inGermany April 1a, 1928.

the clamped article. The side members 1 and 2 are shaped to form, withthe rear member 3, a slot 8, having plane, approximately parallelboundary surfaces, for receiving a film strip or a sheet of photographicpaper 7. In the side walls 1 and 2 obtuse-angled slots 6 are cut toprovide bearings for the axle 5 of a pressure roller 4, so that thelatter is easily displaceable and is in contact with the rear member 3when at rest. If a photographic image carrier be inserted in the slot 8with its gelatin'layer averted from the rear member 3, the rollers 1 areforced upwardly and allow the entrance of the thin sheet 7 Inconsequence of their own weight, however, they automatically fall down,and, guided by the oblique slot 6, they firmly clamp the sheet restingagainst the rear member 3.

The lower part of the slot 6 is slightly inclined to the bearing member3 so that automatic braking of the rollers 4 is obtained (as seen inFig. 2). To obtain increased friction between the image carrier androller the pressure rollers may be fluted.

In the upper portion of the side members 1 and 2 openings 9 may beprovided through which a rod 10 of a corresponding diameter may bepassed in order to hold the clamping devices freely suspended.

I claim:

1. A clamping device for holding wet photographic films or papersautomatically in a suspended position comprising a pair of sidemembers,-a backmember connectedto said members at their upper portionsand spaced from their lower portions thus forming a slit with plane,approximately parallel boundary surfaces for introducing the wetmaterial, said side members being provided with slots extendingangularly with respect to said back member, and a roller between saidside members and having an axle supported in said slots.

2. The invention as set forth in claim 1 wherein one portion of each ofsaid slots is inclined at a greater angle to said back member thananother portion.

3. The invention as set forth in claim 1 wherein the outer line of thatportion of the slot which is nearest said back member 1s 2 anna:-

spaced therefrom a distance substantially equal to the radius of theroller mounted in said slot.

4. The invention as set forth in claim 1 wherein said axle extendsbeyond said side. members and serves as a means for moving 1 saidroller.

In testimony whereof I aifix my si STEFAN KAM ature. SKI.

